docs: Update Data Schemas page, remove Data Schema Cheatsheet (#1512)

Author: aleksanderkatan

apps/typegpu-docs/astro.config.mjs

@@ -226,10 +226,6 @@ export default defineConfig({
         {
           label: 'Reference',
           items: stripFalsy([
-            {
-              label: 'Data Schema Cheatsheet',
-              slug: 'reference/data-schema-cheatsheet',
-            },
             DEV && {
               label: 'Naming Convention',
               slug: 'reference/naming-convention',